Detail 01
.674 inch cup diameter
Small end of the Standard line. Less lip inside the rim, so endurance comes easier, but big low notes take more work.

Independent shopping perspective
Schilke's 15B in silver plate: the small .674-inch model 15 rim with a brighter B cup. For players wanting more edge without a bigger diameter.

Strong match
Consider the trade-offs
What matters in use
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 01
Small end of the Standard line. Less lip inside the rim, so endurance comes easier, but big low notes take more work.
Detail 02
Same diameter, shallower cup. You change the tone toward brilliance without relearning a new rim size.
Detail 03
Less cup volume means more high overtones and projection, and less of the round warmth a deeper cup gives you.
Detail 04
The standard throat across the Schilke line. Blows like most of the family, so there's no new resistance to adapt to.
Detail 05
Same model dimensions as the gold-plated Group II pieces, at roughly a third of the price.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
Identical .674-inch cup diameter and 26 throat. The 15B swaps in a B-style cup, which is shallower and produces a more brilliant sound than the standard 15.
It's a narrow, bright-leaning piece. A beginner is usually better served by a medium diameter with a deeper cup while the embouchure is still forming.
Plating. Silver-plated Standard Series pieces run well under the gold Group II versions; the cup, rim and throat dimensions are what define the model.
The shallower B cup and small diameter make the upper register easier to reach. It won't replace air support or practice, and the low register gives up some body.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.